Fresnel mirror processing device with deflection adjusting function

Abstract

The utility model relates to a Fresnel mirror surface machining device with a deflection adjusting function, and relates to the field of lens machining equipment.The Fresnel mirror surface machining device comprises a tool rest, a workpiece spindle and a driving mechanism, the workpiece spindle is horizontally arranged, the end of the workpiece spindle is used for installing a lens, the workpiece spindle is used for driving the lens to rotate, and the tool rest comprises a moving seat, a sliding seat and a tool bit; the moving seat is arranged on one side of the workpiece spindle, the sliding seat is slidably connected to the moving seat, the tool bit is detachably connected to the sliding seat, the sliding seat is used for driving the tool bit to slide in the arc direction with the tip of the tool bit as the circle center, and the driving mechanism is used for driving the sliding seat to slide relative to the moving seat. The Fresnel lens machining tool bit has the effect of reducing the number of times of replacing the tool bit when the Fresnel lens is machined.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of lens processing equipment, in particular to a Fresnel mirror surface processing device with deflection adjustment function. BACKGROUND

[0002] The Fresnel lens is also called a spiral lens, which is a sheet formed by injection molding of polyolefin material. One surface of the lens is flat, and the other surface is engraved with a plurality of concentric circular grooves arranged from small to large. The concentric circular grooves are designed in different shapes according to the function of the Fresnel lens.

[0003] The existing lens processing equipment includes a tool holder and a workpiece spindle. The workpiece spindle is horizontally arranged, and the end of the workpiece spindle is used to install the lens to be processed. The workpiece spindle drives the lens to rotate. The tool holder is slidingly connected to one side of the workpiece spindle. A tool bit is installed on the tool holder. The tool bit is used to abut against the end surface of the rotating lens, so as to draw a groove on the end surface of the lens. When the processing of one groove is completed, the user needs to replace the tool bit, so that different shaped tool bits can continue to draw grooves on the end surface of the lens, and finally a plurality of concentric circular grooves with different shapes are formed on the end surface of the Fresnel lens.

[0004] The related technical solutions in the above have the following defects: During the processing, a plurality of tool bits need to be replaced on the tool holder, resulting in low processing efficiency. CONTENT OF THE UTILITY MODEL

[0005] In order to reduce the number of times of replacing the tool bit when processing the Fresnel lens, the present application provides a Fresnel mirror surface processing device with deflection adjustment function.

[0006] The Fresnel mirror surface processing device with deflection adjustment function provided by the present application adopts the following technical solutions:

[0007] The Fresnel mirror surface processing device with deflection adjustment function includes a tool holder, a workpiece spindle and a driving mechanism. The workpiece spindle is horizontally arranged, and the end of the workpiece spindle is used to install the lens. The workpiece spindle is used to drive the lens to rotate. The tool holder includes a moving seat, a sliding seat and a tool bit. The moving seat is arranged on one side of the workpiece spindle. The sliding seat is slidingly connected to the moving seat. The tool bit is detachably connected to the sliding seat. The sliding seat is used to drive the tool bit to slide along the arc direction with the tip of the tool bit as the center. The driving mechanism is used to drive the sliding seat to slide relative to the moving seat.

[0008] By adopting the technical scheme, the workpiece spindle is arranged on one side of the tool rest, one end of the workpiece spindle is connected with the motor, and the other end can be provided with the lens, and then the workpiece spindle can drive the lens to rotate, when the lens rotates, the tool head can abut on the end face of the lens to draw a ring-shaped groove on the surface of the lens, when grooves are drawn on different positions of the lens, the cross-sectional shapes of the grooves are different, the sliding seat can drive the tool head to slide, so that the tool head swings with the tip of the tool head as the center, and the tool head can draw grooves on the lens at different angles relative to the end face of the lens, the shape of the groove drawn on the lens is adjusted, and the purpose of machining the Fresnel lens is achieved.

[0009] Optionally, the moving seat is provided with an arc-shaped sliding rail, and the sliding seat is fixed with a sliding block which is an arc-shaped block and is clamped in the arc-shaped sliding rail.

[0010] By adopting the technical scheme, the arc-shaped sliding rail is arranged on the moving seat, the center of the arc of the arc-shaped sliding rail coincides with the tip of the tool head, when the sliding seat slides on the arc-shaped sliding rail, the tip of the tool head remains stable, the angle of the tool head relative to the end face of the lens is adjusted, and grooves of different shapes can be machined on the lens.

[0011] Optionally, the sliding seat is fixed with a clamping piece, the driving mechanism comprises a sliding frame and a power piece, the sliding frame is horizontally arranged, a sliding groove is arranged in the sliding frame, the clamping piece is clamped in the sliding groove, the clamping piece slides relative to the sliding frame in the horizontal direction, and the power piece is used to drive the sliding frame to vertically reciprocate.

[0012] By adopting the technical scheme, the clamping piece is arranged in the sliding frame, when the sliding frame moves, the sliding seat slides along the extension direction of the arc-shaped sliding rail, at this time, the clamping piece can move relative to the sliding frame in the horizontal direction, the distance of the vertical movement of the sliding frame is controlled by the user, and the tool head can swing at different angles.

[0013] Optionally, the power piece is a piezoelectric ceramic linear motor, one end of the piezoelectric ceramic linear motor is fixed on the moving seat, and the upper end of the piezoelectric ceramic linear motor is connected with the sliding frame.

[0014] By adopting the technical scheme, the piezoelectric ceramic linear motor is used to drive the sliding frame to move, the distance of the movement of the sliding frame is high in precision, the included angle of the tool head relative to the lens is high in precision, and the machining quality of the lens is improved.

[0015] Optionally, the clamping piece is provided with an anti-abrasion sleeve, and the anti-abrasion sleeve is arranged in the sliding frame.

[0016] By adopting the above technical solution, an anti-wear sleeve is installed on the outside of the clamping part, which abuts and rubs against the slide frame. When the anti-wear sleeve slides in the slide frame many times, wear occurs on the anti-wear sleeve, which reduces the size of the anti-wear sleeve. At this time, the user can replace the anti-wear sleeve, so that the anti-wear sleeve is clamped in the slide frame. When the cutter head abuts against the lens for processing, the cutter post bears the cutting force, which can reduce the probability of the clamping part vibrating in the slide frame, reduce the probability of the slide seat and cutter head shaking, and improve the processing quality of Fresnel lenses.

[0017] Optionally, a three-axis moving platform is provided below the moving base, which is used to drive the cutter head to move along the axial, horizontal, and vertical directions of the workpiece spindle, respectively.

[0018] By adopting the above technical solution, a three-axis moving platform is set under the moving seat, which enables three electric guide rails to drive the moving seat to move in three degrees of freedom, thereby enabling the cutter head to move through the electric guide rails, making it convenient for the user to control the position of the cutter head.

[0019] Optionally, a tool holder is detachably connected to the sliding seat, a pressure block is provided on the tool holder, and a bolt is provided on the pressure block. The bolt passes through the pressure block and is threadedly connected to the tool holder. The pressure block and the tool holder together clamp the tool head.

[0020] By adopting the above technical solution, by setting a pressure block on the tool holder, the pressure block is detachably connected to the tool holder by bolts, thereby achieving the effect of installing the tool head. By making the tool holder detachably connected to the sliding seat, the user can adjust the tool holder according to the shape of the tool head, install tool holders of different shapes on the sliding seat, and thus ensure that the tip of the tool head always coincides with the center of the arc formed by the arc-shaped slide rail.

[0021] Optionally, the pressure block is provided with a slot, which engages with the blade of the cutter head.

[0022] By adopting the above technical solution, a slot is opened on the pressure block so that the slot abuts against the cutter head, thereby reducing the probability of the cutter head being misaligned when it abuts against the lens.

[0023] In summary, the beneficial technical effects of this application are as follows:

[0024] 1. By setting a workpiece spindle on one side of the tool holder, one end of the workpiece spindle is connected to a motor, and the other end can be fitted with a lens. This allows the workpiece spindle to drive the lens to rotate. When the lens rotates, the cutter head can abut against the end face of the lens and etch an annular groove on the lens surface. When grooving is done at different positions on the lens, the cross-sectional shape of the groove is different. The sliding seat can drive the cutter head to slide, thereby causing the cutter head to swing around the tip of the cutter head as the center. This allows the cutter head to groove at different angles relative to the end face of the lens, achieving the effect of adjusting the shape of the groove etched on the lens. This can complete the processing of Fresnel lenses. During the processing, the step of changing cutter heads with different cross-sectional shapes can be eliminated, improving processing efficiency.

[0025] 2. By setting a retainer on the sliding seat and placing the retainer inside the sliding frame, when the sliding frame moves vertically, the sliding seat slides along the extension direction of the arc-shaped slide rail. At this time, the retainer can move horizontally relative to the sliding frame. By controlling the distance the sliding frame moves, the user can make the cutter head swing at different angles.

[0026] 3. By setting an anti-wear sleeve on the outside of the clamping part, the anti-wear sleeve abuts and rubs against the slide frame. When the anti-wear sleeve slides in the slide frame many times, wear occurs on the anti-wear sleeve, which reduces the size of the anti-wear sleeve. At this time, the user can replace the anti-wear sleeve, so that the anti-wear sleeve is clamped in the slide frame. When the cutter head abuts against the lens for processing, the tool holder bears the cutting force, which can reduce the probability of the clamping part vibrating in the slide frame, reduce the probability of the slide seat and the cutter head wobbling, and improve the processing quality of Fresnel lenses. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0028] Figure 2 This is a schematic cross-sectional view of a Fresnel lens according to an embodiment of this application.

[0029] Figure 3 This is a schematic diagram of the tool holder structure according to an embodiment of this application.

[0030] Figure 4 This is a schematic diagram of the position of the cutting head during lens processing according to an embodiment of this application. Figure 1 .

[0031] Figure 5 This is a schematic diagram of the position of the cutting head during lens processing according to an embodiment of this application. Figure 2 .

[0032] Figure 6 This is a schematic diagram showing the position of the drive mechanism in an embodiment of this application.

[0033] Figure 7 This is a schematic diagram of the structure of the sliding seat according to an embodiment of this application.

[0034] Figure 8 This is a schematic diagram showing the location of the card in an embodiment of this application.

[0035] Reference numerals: 1. Tool holder; 11. Moving seat; 111. Arc-shaped slide rail; 112. Electric guide rail; 12. Sliding seat; 121. Slider; 122. Clamping device; 123. Anti-wear sleeve; 13. Tool head; 131. Tool holder; 132. Pressure block; 133. Slot; 134. Bolt; 2. Workpiece spindle; 3. Drive mechanism; 31. Slide frame; 311. Slide groove; 32. Piezoelectric ceramic linear motor; 4. Lens; 41. Groove. Detailed Implementation

[0036] The present application will be further described in detail below with reference to the accompanying drawings.

[0037] This application discloses a Fresnel mirror processing apparatus with yaw adjustment function, referring to... Figure 1 and Figure 2 The system includes a tool holder 1, a workpiece spindle 2, and a drive mechanism 3. The workpiece spindle 2 is horizontally positioned, with one end connected to a lens 4 and the other end connected to the drive mechanism. The workpiece spindle 2 can drive the lens 4 to rotate. The tool holder 1 is located on the workpiece spindle 2 near the lens 4. The tool holder 1 includes a movable base 11, a sliding base 12, and a tool head 13. The movable base 11 is slidably connected to the equipment, and the sliding base 12 is slidably connected to the movable base 11. The tool head 13 is detachably connected to the sliding base 12 and is used to abut against the rotating lens 4, thereby machining multiple grooves 41 on the surface of the lens 4. The movable base 11 can move along the X, Y, and Z directions on the equipment, thus facilitating tool setting of the tool head 13. The sliding seat 12 slides back and forth along the arc direction on the moving seat 11. The sliding seat 12 rotates relative to the moving seat 11 around the end point of the cutter head 13 as an axis. The driving mechanism 3 is used to drive the cutter head 13 to swing on the moving seat 11, thereby adjusting the tilt angle of the cutter head 13 relative to the end face of the lens 4, so that the cutter head 13 can process grooves 41 of different shapes when processing the lens 4, improving the efficiency of processing Fresnel lenses and reducing the steps of changing the cutter head 13.

[0038] Reference Figure 3 The bottom of the movable base 11 is provided with a three-axis moving platform 112. The three-axis moving platform 112 can be formed by three electric slide rails connected to each other. The three-axis moving platform 112 is used to drive the cutter head 13 to move along the axial, horizontal and vertical directions of the workpiece spindle 2, so that the cutter head 13 can abut against different positions on the end face of the lens 4 and process grooves 41 of different depths on the lens 4, so that the cutter head 13 on the movable base 11 can approach or move away from the lens 4 at the end of the workpiece spindle 2.

[0039] Reference Figure 3The movable base 11 is equipped with two arc-shaped slide rails 111, and the sliding base 12 is fixed with two sliders 121. Each slider 121 is an arc-shaped block, and each slider 121 is slidably connected to one arc-shaped slide rail 111. (Refer to...) Figure 4 and Figure 5 The arc-shaped slide rail 111 is used to guide the sliding seat 12, so that the cutter head 13 can rotate with the tip of the cutter head 13 as the origin, thereby allowing the cutter head 13 to feed at different angles and process the lens 4 at the end of the workpiece spindle 2.

[0040] Reference Figure 6 , Figure 7 and Figure 8 A locking element 122 is provided on the sliding seat 12, located between the sliding seat 12 and the slider 121. The locking element 122 has a cylindrical structure. The driving mechanism 3 includes a sliding frame 31 and a piezoelectric ceramic linear motor 32. The sliding frame 31 is horizontally arranged, and a groove 311 is opened in the middle of the sliding frame 31, in which the locking element 122 is locked. The piezoelectric ceramic linear motor 32 is vertically arranged on the moving seat 11. One end of the piezoelectric ceramic linear motor 32 is connected to the sliding frame 31, and the other end is connected to the moving seat 11. The piezoelectric ceramic linear motor 32 is used to extend and retract and drive the sliding frame 31 to move. When the sliding frame 31 moves horizontally, the locking element 122 slides in the groove 311, thereby causing the sliding seat 12 to slide along the arc formed by the arc-shaped slide rail 111, achieving the effect of rotating the cutter head 13 around the cutter tip.

[0041] Reference Figure 6 , Figure 7 and Figure 8 The clamping component 122 is fitted with an anti-wear sleeve 123, which is a circular ring structure. The anti-wear sleeve 123 is located inside the slide groove 311 and is in frictional contact with the slide groove 311. When the piezoelectric ceramic linear motor 32 drives the slide frame 31 to move vertically, the anti-wear sleeve 123 moves horizontally within the slide groove 311, at which time the anti-wear sleeve 123 experiences significant wear. By periodically replacing the anti-wear sleeve 123, the user can ensure that the clamping component 122 is stably engaged within the slide groove 311, minimizing the gap between the slide groove 311 and the clamping component 122, stabilizing the position of the cutter head 13, and reducing the wobble of the cutter head 13 and the sliding seat 12 during machining.

[0042] Reference Figure 6 , Figure 7 and Figure 8A cutter holder 131 is detachably connected to the sliding seat 12, and the cutter holder 131 is fixed to the sliding seat 12 by bolts. A pressure block 132 is provided on the cutter holder 131, and a rectangular slot 133 is formed on the pressure block 132. The slot 133 engages with the cutter head 13. A bolt 134 is provided on the pressure block 132, passing through the pressure block 132 and threadedly connected to the cutter holder 131. When the pressure block 132 is fixed to the cutter holder 131, the pressure block 132 and the cutter holder 131 together clamp the cutter head 13, fixing the cutter head 13 to the cutter holder 131, thereby allowing the cutter head 13 to be detachably connected to the sliding seat 12.

[0043] The implementation principle of this application embodiment is as follows: by setting a sliding seat 12 on the moving seat 11, the cutting head 13 is mounted on the sliding seat 12, so that the sliding seat 12 can drive the cutting head 13 to slide along the arc direction. After the cutting head 13 processes an annular groove 41 on the rotating lens 4, the moving seat 11 can slide and move away from the lens 4. At this time, the cutting head 13 slides, so that the angle between the cutting head 13 and the end face of the lens 4 changes, thereby processing grooves 41 of different shapes on the lens 4, completing the processing of the Fresnel lens and improving work efficiency.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A Fresnel mirror processing device with yaw adjustment function, characterized in that: The tool holder (1), workpiece spindle (2) and drive mechanism (3) are included. The workpiece spindle (2) is set horizontally. The end of the workpiece spindle (2) is used to install a lens. The workpiece spindle (2) is used to drive the lens to rotate. The tool holder (1) includes a moving seat (11), a sliding seat (12) and a tool head (13). The moving seat (11) is set on one side of the workpiece spindle (2). The sliding seat (12) is slidably connected to the moving seat (11). The tool head (13) is detachably connected to the sliding seat (12). The sliding seat (12) is used to drive the tool head (13) to slide in an arc direction with the tip of the tool head (13) as the center. The drive mechanism (3) is used to drive the sliding seat (12) to slide relative to the moving seat (11).

2. The Fresnel mirror processing device with yaw adjustment function according to claim 1, characterized in that: The movable seat (11) is provided with an arc-shaped slide rail (111), and a slider (121) is fixed on the sliding seat (12). The slider (121) is an arc-shaped block and is engaged in the arc-shaped slide rail (111).

3. The Fresnel mirror processing device with yaw adjustment function according to claim 2, characterized in that: The sliding seat (12) is fixed with a clip (122). The driving mechanism (3) includes a sliding frame (31) and a power component. The sliding frame (31) is horizontally set and a sliding groove (311) is opened in the sliding frame (31). The clip (122) is engaged in the sliding groove (311). The clip (122) slides relative to the sliding frame (31) in the horizontal direction. The power component is used to drive the sliding frame (31) to move vertically back and forth.

4. The Fresnel mirror processing device with yaw adjustment function according to claim 3, characterized in that: The power component is a piezoelectric ceramic linear motor (32), one end of which is fixed on the movable seat (11), and the upper end of the piezoelectric ceramic linear motor (32) is connected to the slide frame (31).

5. The Fresnel mirror processing device with yaw adjustment function according to claim 3, characterized in that: The card (122) is covered with an anti-wear sleeve (123), which is located inside the slide frame (31).

6. The Fresnel mirror processing device with yaw adjustment function according to claim 2, characterized in that: A three-axis moving platform (112) is provided below the moving seat (11). The three-axis moving platform (112) is used to drive the cutter head (13) to move along the axial, horizontal and vertical directions of the workpiece spindle (2).

7. The Fresnel mirror processing device with yaw adjustment function according to claim 2, characterized in that: A blade holder (131) is detachably connected to the sliding seat (12). A pressure block (132) is provided on the blade holder (131). A bolt (134) is provided on the pressure block (132). The bolt (134) passes through the pressure block (132) and is threadedly connected to the blade holder (131). The pressure block (132) and the blade holder (131) together clamp the blade head (13).

8. A Fresnel mirror processing device with yaw adjustment function according to claim 7, characterized in that: The pressure block (132) has a slot (133) that engages with the blade of the cutter head (13).

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